Oscar Altpeter (June 1, 1857 - November 23, 1935) was an American maltster who served as an alderman from Milwaukee, and for four years as a Democratic member of the Wisconsin State Senate's Sixth District (2nd, 4th, 6th & 9th Wards of the City of Milwaukee, Wisconsin.
[1] Altpeter was born in the Sixth Ward of Milwaukee on June 1, 1857, the son of Phillip Altpeter, an immigrant from Germany who was one of the first brewers in Milwaukee; was educated in public schools and the German-English Academy; and graduated from the Spencerian Business College in 1875.
Altpeter was elected as alderman from the Sixth Ward for terms from 1885–1889, and was a member of the board of trustees of the Milwaukee Public Museum in 1888–89.
He was elected state senator in 1892 to succeed fellow Democrat Herman Kroeger, with 6,119 votes to 5,506 for Republican H. J. Sullivan, 312 for Populist William H. Gladding and 82 for Prohibitionist for Silas Chapman.
His father founded the Northwestern Brewery in Milwaukee, of which himself and his brothers Gustav and Louis were employed.